refactor(store): split gatewayStore into specialized domain stores

Major restructuring:
- Split monolithic gatewayStore into 5 focused stores:
  - connectionStore: WebSocket connection and gateway lifecycle
  - configStore: quickConfig, workspaceInfo, MCP services
  - agentStore: clones, usage stats, agent management
  - handStore: hands, approvals, triggers, hand runs
  - workflowStore: workflows, workflow runs, execution

- Update all components to use new stores with selector pattern
- Remove

desktop/src/store/configStore.ts

@@ -6,6 +6,7 @@
  */
 import { create } from 'zustand';
 import type { GatewayModelChoice } from '../lib/gateway-config';
+import { setStoredGatewayUrl, setStoredGatewayToken } from '../lib/gateway-client';
 import type { GatewayClient } from '../lib/gateway-client';
 
 // === Types ===
@@ -233,6 +234,13 @@ export const useConfigStore = create<ConfigStateSlice & ConfigActionsSlice>((set
 
     try {
       const nextConfig = { ...get().quickConfig, ...updates };
+      // Persist gateway URL/token to localStorage for reconnection
+      if (nextConfig.gatewayUrl) {
+        setStoredGatewayUrl(nextConfig.gatewayUrl);
+      }
+      if (Object.prototype.hasOwnProperty.call(updates, 'gatewayToken')) {
+        setStoredGatewayToken(nextConfig.gatewayToken || '');
+      }
       const result = await client.saveQuickConfig(nextConfig);
       set({ quickConfig: result?.quickConfig || nextConfig });
     } catch (err: unknown) {
@@ -278,12 +286,12 @@ export const useConfigStore = create<ConfigStateSlice & ConfigActionsSlice>((set
       channels.push({
         id: 'feishu',
         type: 'feishu',
-        label: 'Feishu',
+        label: '飞书 (Feishu)',
         status: feishu?.configured ? 'active' : 'inactive',
         accounts: feishu?.accounts || 0,
       });
     } catch {
-      channels.push({ id: 'feishu', type: 'feishu', label: 'Feishu', status: 'inactive' });
+      channels.push({ id: 'feishu', type: 'feishu', label: '飞书 (Feishu)', status: 'inactive' });
     }
 
     set({ channels });